Dear Editor, I just arrived home from seeing Sin City based on the Chronicle's four stars and AC pick rating [Film, April 1]. I am compelled to warn other readers that this movie is essentially two straight hours of violence, much of it unnecessary. The Chronicle review mentions the violence, but buyer beware: I was so disgusted/nauseated/bored by the end that I left 25 minutes early. I am not a prude – far from it, in fact. But I don't like to be mentally battered for two hours. My advice is pay for another movie, step in for five minutes of this one so you can appreciate the cool cinematography, then spend the rest of your evening relaxing with a more enjoyable flick.